May weather forecastGerlaw, IL
May
Weather in May
May, the last month of the spring in Gerlaw, is an agreeable month, with temperature in the range of an average high of 70.9°F (21.6°C) and an average low of 54.1°F (12.3°C).Temperature
May's arrival coincides with a temperature rise, moving from April's mild 60.4°F (15.8°C) to an agreeable 70.9°F (21.6°C). Gerlaw witnesses an average low-temperature of 54.1°F (12.3°C) throughout the month of May.Humidity
In Gerlaw, the average relative humidity in May is 79%.Rainfall
May is the month with the most rainfall in Gerlaw. Rain falls for 19 days and accumulates 4.25" (108mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in May in Gerlaw is 14h and 29min.On the first day of May, sunrise is at 5:59 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:32 am and sunset at 8:27 pm CDT.
Sunshine
In Gerlaw, the average sunshine in May is 8.9h.UV index
The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 5 during May translates into these guidelines:
Exercise prevention - Warding off sunburn is urged. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Gerlaw, IL
- Average high temperature in May: 70.9°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in May: 54.1°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (17.6°F).
Average pressure in May
Gerlaw, IL
- Average pressure in May: 29.94"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in May
Gerlaw, IL
- Average wind speed in May: 9mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in May
Gerlaw, IL
- Average humidity in May: 79%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Gerlaw, IL
- Average rainfall in May: 4.25"
The wettest month (with the highest rainfall) is May (4.25").
The driest month (with the least rainfall) is January (1.46").
Average rainfall days in May
Gerlaw, IL
- Average rainfall days in May: 19 days
The month with the highest number of rainy days is May (19 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in May
Gerlaw, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (4.61").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Gerlaw, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (10.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Gerlaw, IL
- Average daylight in May: 14h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 8h and 54min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in May
Gerlaw, IL
- Average sunshine days in May: 9.9 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (9.2 days).
Average UV index in May
Gerlaw, IL
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in May
Gerlaw, IL
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility in May
Gerlaw, IL
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
